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[Insulin treatment in type 2 diabetes: epidemiological data]
1INSERM U500, Epidémiologie des Maladies Chroniques et du Vieillissement, 39 av Charles Flahault, 34093 Montpellier. papoz@u500.montp.inserm.fr
Diabetes & Metabolism
|March 26, 2002
Summary
Insulin therapy in type 2 diabetes shows mixed results, with intensive treatment improving glycemic control and microvascular complications but modest cardiovascular benefits. Individual patient assessment is crucial for insulin treatment decisions.
Area of Science:
- Endocrinology
- Metabolic Diseases
- Pharmacology
Background:
- Blood glucose control is challenging for type 2 diabetes patients without insulin after years of disease.
- Significant regional variations exist in insulin use across Europe.
- Insulin therapy's benefits on metabolic control are primarily demonstrated in selected patient groups within clinical trials.
Purpose of the Study:
- To evaluate the long-term effects of intensive versus conventional antidiabetic treatment in type 2 diabetes.
- To compare the efficacy and safety of insulin therapy versus oral antidiabetic agents.
- To address clinical uncertainties and the need for more long-term data on insulin treatment in type 2 diabetes.
Main Methods:
- Analysis of the UK Prospective Diabetes Study (UKPDS), a large, randomized, long-term clinical trial.
- Comparison of conventional versus intensive antidiabetic treatment strategies (including insulin and sulfonylureas).
- Review of clinical trial data and surveys on insulin use and complications in type 2 diabetes.
Main Results:
- Intensive treatment led to better glycemic control and a 25% reduction in microvascular complications over ten years.
- Cardiovascular complications and mortality benefits from intensive treatment were modest.
- Some studies suggest overly strict insulin regimens may not improve or could worsen cardiovascular outcomes.
Conclusions:
- While intensive treatment improves certain outcomes, clinical uncertainties remain regarding long-term cardiovascular effects of insulin in type 2 diabetes.
- Further long-term clinical studies are warranted to clarify the role of insulin.
- Individualized assessment of benefits and risks is essential when considering insulin therapy after oral agent failure, especially in older patients.